The effect of mass transfer on sound propagation in cylindrical tubes using the low reduced frequency approximation

1998 ◽  
Vol 103 (5) ◽  
pp. 2839-2839
Author(s):  
Craig J. Hickey ◽  
Richard Raspet
Keyword(s):  
Mass Transfer ◽  
Sound Propagation ◽  
Reduced Frequency ◽  
Cylindrical Tubes ◽  
Frequency Approximation

scholarly journals New energy, angle momentum and entropy balance approach to modelling climate and macroturbulent atmospheric dynamics, heat and mass transfer at macroscale. III. Low-frequency approximation and singularities in fields of meteoelements

2021 ◽  
pp. 127-140
Author(s):  
O.Yu. Khetselius ◽  
A.V. Glushkov ◽  
A.N. Sofronkov ◽  
S.N. Stepanenko ◽  
A.A. Svinarenko
Keyword(s):  
Mass Transfer ◽  
Angular Momentum ◽  
Heat And Mass Transfer ◽  
Low Frequency ◽  
Atmospheric Dynamics ◽  
Entropy Balance ◽  
Mass Transfer Processes ◽  
New Energy ◽  
Physical Features ◽  
Frequency Approximation

An generalized low-frequency approximation of energy, angle momentum and entropy balance relationships to modelling climate and macro-turbulent atmospheric dynamics, heat and mass transfer at macroscale is introduced and allow significantly to simplify the main fundamental equations. A new equilibrium approach to modelling the global mechanisms of climatic and macroturbulent atmospheric low-frequency processes, including heat and mass transfer processes, teleconnection effects, etc., is based on the use of equilibrium relations for entropy, energy, angular momentum, spectral theory of atmospheric macroturbulence and moisture turnover in connection with the continuity of forms of atmospheric circulation (teleconnection, genesis of fronts). The physical features of singularities in the fields of meteorological elements and the balance of the angular momentum as well as a generalized Arakawa-Schubert model are introduced and discussed.

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